DTH Hammers and Bits

AMS stocks a wide range of Down the Hole (DTH) hammers ranging from 4 to 8 inch in diameter. We also carry a wide variety of DTH bits in numerous shank sizes and can custom make any type of bit to suit all drilling requirements.

Australasian Mining Services (Pty) Ltd is the official exclusive distributor for Shareate Tools Ltd products in Australia.

DTH Hammer Range
Model
Shank
Top Sub Thread
Total length (less bit)
Weight (less bit)
Piston Weight
Outside Diameter
Bit Range
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
SD45B
DHD340
2 3/8" API Reg
37" (940mm)
88 lbs (40kg)
18.8 lbs (8.52kg)
3.9" (100mm)
4 1/2" - 5"
115 - 127mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
WQ55B
QL5
3 1/2" API Reg
41.93" (1065mm)
152.8 lbs (69.3kg)
35 lbs (16.06kg)
4.96" (126mm)
5 1/2" - 6"
216 - 254mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
WQ65B
QL6
3 1/2" API Reg
43.33" (1101mm)
210.8 lbs (95.6kg)
46 lbs (20.88kg)
5.75" (146mm)
6 1/2" - 8"
165 - 203mm
Download Product Sheet
Model
Shank
Top Sub Thread
Total length (ex. bit)
Weight (ex. bit)
Piston Weight
Outside Diameter
Bit Range (inches)
Bit Range (metric)
SQ8
QL80
4 1/2" API Reg
51.18" (1300mm)
458.5 lbs (208kg)
92.5 lbs (42kg)
7.64" (194mm)
8 1/2" - 12"
216 - 305mm
Download Product Sheet
DTH SP (Short Shank) Hammer Range
Model
AMS SP4
AMS SP5
AMS SP6
AMS SP7
AMS SP8
AMS SP9
Shank
SP4
SP5
SP6
SP7
SP8
SP9
Top Sub Thread
2 3/8" API Reg
2 3/8" API Reg
3 1/2" API Reg
3 1/2" API Reg
4 1/2" API Reg
5 1/2" API Reg
Total length (ex. bit)
34" (863mm)
38" (970mm)
44.5" (1131mm)
47.1" (1197mm)
49.8" (1266mm)
55.5" (1410mm)
Weight (ex. bit)
77 lbs (35kg)
141 lbs (64kg)
221 lbs (100kg)
297.6 lbs (135kg)
487 lbs (221kg)
637 lbs (289kg)
Piston Weight
17.5 lbs (8kg)
26.5 lbs (12kg)
50.7 lbs (23kg)
76 lbs (34.5kg)
98 lbs (44.5kg)
157.6 lbs (71.5kg)
Outside Diameter
3.9" (99mm)
4.9" (126mm)
5.8" (148mm)
6.6" (168mm)
7.3" (185mm)
8.8" (225mm)
Bit Range
4 1/4" - 5 1/3"
108 - 135mm
5 1/3" - 6"
136 - 155mm
5 1/5" - 8"
158 - 203mm
7" - 8 1/2"
178 - 216mm
8" - 10"
200 - 254mm
10" - 12 1/4"
254 - 311mm
Bit Face Selection
Flat Face
Flat Face bits are a general purpose bit that will work in all rock conditions but should be used in hard or abrasive conditions such as granite, basalt, and hard limestone. Flat face bits are the best choice for drilling in a high silica environment. Flat face bits produce good penetration rates and better erosion pattern.
Double Gauge Face
Suitable for fast penetration rates in medium to hard rock formations. This bit face is designed for high air pressures.
Convex Face
Convex Face bits are designed for fast penetration rates in softer rock like shale and limestone with low silica content.
Concave Face
Concave Face designed for unconsolidated or broken rock. These face features will help drill straighter holes in medium to hard formations.
Drop Centre
For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures. Maximum hole deviation control.

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